package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.dto.DishDto;
import com.itheima.reggie.entity.Category;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.DishFlavor;
import com.itheima.reggie.service.CategoryService;
import com.itheima.reggie.service.DishFlavorService;
import com.itheima.reggie.service.DishService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.*;

import java.nio.channels.Pipe;
import java.util.List;
import java.util.stream.Collectors;

/**
 * @author xindezhentu
 * @create 2023-04-06 19:20
 */
@RestController
@RequestMapping("/dish")
@Slf4j
public class DishController {
    @Autowired
    private DishService dishService;
    @Autowired
    private DishFlavorService dishFlavorService;
    @Autowired
    private CategoryService categoryService;
    /**
     *新增菜品
     * @param dishDto
     * @return
     */
    @PostMapping
    public R<String> save (@RequestBody DishDto dishDto){
        log.info(dishDto.toString());

        dishService.saveWithFlavor(dishDto);
        return R.success("新增菜品成功");
    }

    @GetMapping("/page")
    public R<Page> page(int page,int pageSize,String name){

//        构造分页构造器对象
        Page<Dish> pageInfo = new Page<>(page,pageSize);
        Page<DishDto> dishDtoPage = new Page<>();
//        条件构造器
        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();
//        添加过滤条件
        queryWrapper.like(name!=null,Dish::getName,name);
//        添加排序条件
        queryWrapper.orderByDesc(Dish::getUpdateTime);
//        执行分页查询
        dishService.page(pageInfo,queryWrapper);
//       对象拷贝
        BeanUtils.copyProperties(pageInfo,dishDtoPage,"records");


        List<Dish> records = pageInfo.getRecords();
        List<DishDto> list =  records.stream().map((item)->{
            DishDto dishDto =  new DishDto();
            BeanUtils.copyProperties(item,dishDto );
            Long categoryId = item.getCategoryId();
//            根据id查询分类对象
            Category category = categoryService.getById(categoryId);
            if(category!=null){
                String categoryName = category.getName();
                dishDto.setCategoryName(categoryName);
            }

            return dishDto;
        }).collect(Collectors.toList());

        dishDtoPage.setRecords(list);
        return R.success(dishDtoPage);
    }

    /**
     * 根据id查询菜品信息和对应的口味信息
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<DishDto> get(@PathVariable Long id){

        DishDto dishDto = dishService.getByIdWithFlavor(id);
        return R.success(dishDto);

    }
    /**
     *修改菜品
     * @param dishDto
     * @return
     */
    @PutMapping
    public R<String> update(@RequestBody DishDto dishDto){
        log.info(dishDto.toString());

        dishService.updateWithFlavor(dishDto);
        return R.success("修改菜品成功");
    }

//    /**
//     * 根据条件查询对应的菜品数据
//     * @param dish
//     * @return
//     */
//    @GetMapping("/list")
//    public R<List<Dish>> list(Dish dish){
////            构造查询条件
//        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper();
//
//        queryWrapper.eq(dish.getCategoryId()!=null,Dish::getCategoryId,dish.getCategoryId());
////        查询是否启售
//        queryWrapper.eq(Dish::getStatus,1);
////        添加排序条件
//        queryWrapper.orderByDesc(Dish::getSort).orderByDesc(Dish::getUpdateTime);
//
//        List<Dish> list = dishService.list(queryWrapper);
//
//        return R.success(list);
//    }
    /**
     * 根据条件查询对应的菜品数据
     * @param dish
     * @return
     */
    @GetMapping("/list")
    public R<List<DishDto>> list(Dish dish){
//            构造查询条件
        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper();

        queryWrapper.eq(dish.getCategoryId()!=null,Dish::getCategoryId,dish.getCategoryId());
//        查询是否启售
        queryWrapper.eq(Dish::getStatus,1);
//        添加排序条件
        queryWrapper.orderByDesc(Dish::getSort).orderByDesc(Dish::getUpdateTime);

        List<Dish> list = dishService.list(queryWrapper);
        List<DishDto> dishDtoList =  list.stream().map((item)->{
            DishDto dishDto =  new DishDto();
            BeanUtils.copyProperties(item,dishDto );
            Long categoryId = item.getCategoryId();
//            根据id查询分类对象
            Category category = categoryService.getById(categoryId);
            if(category!=null){
                String categoryName = category.getName();
                dishDto.setCategoryName(categoryName);
            }
//            当前菜品Id
            Long dishId = item.getId();
            LambdaQueryWrapper<DishFlavor> lambdaQueryWrapper = new LambdaQueryWrapper<>();
            lambdaQueryWrapper.eq(DishFlavor::getDishId,dishId);
            List<DishFlavor> dishFlavorList = dishFlavorService.list(lambdaQueryWrapper);
            dishDto.setFlavors(dishFlavorList);
            return dishDto;
        }).collect(Collectors.toList());


        return R.success(dishDtoList);
    }
}
